lack of personal friendships..

i have a glaring lack of friendships and in particular I used to be close to this one friend and I’m not anymore..ever since then I’ve felt sorta “betrayed” even though people have free will and can pick and chose their friends. I’m really introverted and quiet while this other friend used to be like that as well. However she’s opened up a bit more and gained new friends.

I see her hanging out with them and it makes me wonder why I’m damaged and I’m unable to get new friends as well. Like at work I don’t see myself really being friendly with anyone and I haven’t texted anyone in awhile so I feel like it would be weird to suddenly pop up out of nowhere and say something. And I happen to be a single mom so I just mostly focus on my daughter and my job. Idk I just wish we hadn’t gotten so distant but to me it felt like she preferred having these new friends she has over me and that’s mostly why I distanced myself.

And she hasn’t reached out either despite her keeping in contact with her new friends. Idk I’m being petty I guess…I just hope one day I can find a friend/friend group that I can be myself with but it’s impossible because i stay to myself at work and I struggle to form new friendships 😭any advice on how not to feel bitter when I see an old friend hanging out with other people?